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DIY: Dirt cheap high resolution, high sensitivity multimeter

amirm

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#1
You can get a multimeter for next to nothing. But the cheap ones are garbage, often without autoranging and missing features such as microamp measurements needed for electronics design and troubleshoot.

So imagine everyone's surprise when a meter showed up from China (where else?) with all of these features, rivaling expensive multimeters. It is a 9999 count meter which is twice as good as typical meters that stop at 5000 or whatever. This means it maintains its resolution at higher values/voltages. It also has microamp range which is unheard of in low cost meters and rare even in higher cost ones.

Best news is that it is sold for just $20 including shipping! http://www.ebay.com/itm/AN8008-True...epid=0&hash=item41c6194c31:g:7SAAAOSwi7RZKRTd

upload_2017-7-15_11-40-29.png


As always corners are cut on safety front so do NOT try to use it on AC mains/high voltage. Otherwise, the meter seems to way outperform its price range as this video from Dave Jones shows:


I have 10 to 15 meters so even though I am tempted, I am trying hard to not purchase it. :p Then again, I may not be able to resist and buy it anyway. :D I could throw out my horrible Harbor Freight ones that I keep in the shed/shop (so that if they get stolen, I don't feel bad).
 

RayDunzl

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#5
Got a recommendation for a cheap Capacitance Tester ? - need >20mfd
 

amirm

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#6

March Audio

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#7
You know the saying if its too good to be true.........?

I would just be cautious about accuracy and long term reliability, mind you for $20 who gives a shit. :)

Something I discovered recently is that the Keysight range of meters is surprisingly cheap, cheaper that the de facto Flukes and very good quality and accuracy.

This is my native Australian pricing, I havent searched in the US but should be about 20% less in usd.

http://www.measurement.net.au/c/263512/1/handheld-dmms.html
 

RayDunzl

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#9

RayDunzl

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#11
You're right...

upload_2017-7-15_21-7-0.png
 

RayDunzl

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#12
I've been confused lately from looking at Electric Motor Run capacitors (air conditioning compressor/fan, and air handler fan)...

upload_2017-7-15_21-13-3.png


What the heck is MFD?
 
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RayDunzl

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#13
Ah-ha!

upload_2017-7-15_21-16-25.png
 
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